Our DNA bases may look alot like the Chimps but it is how they are arranged that really shows the enormous differences. This article really digs into the epigenetic differences: > > Read more at: http://medicalxpress.com/news/2012-11-evolution-human-intellect-human-specific-neuronal... paper itself:-http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.1001427-The 3-D arrangements are very different in the human---ape/monkey brains. It is not just methylation changes, but who is sitting next to whom!